http://www.tracopower.com Page 1 of 3
DC/DC Converters
TMR 3WI Series, 3 Watt
Features
◆ Highest power density in SIP package
◆ Ultra wide 4:1 input range
◆ Small footprint: 21.8 x 9.2 mm
◆ Temperature range –40° to +85°C
◆ High efficiency up to 82%
◆ Excellent load and line regulation
◆ Short-circuit protection
◆ I/O isolation 1500 VDC
◆ Remote On/Off control
◆ 3-year product warranty
The TMR-3WI series is a new family of isolated 3W DC/DC converters with regu-
lated output, featuring ultra-wide 4:1 input voltage range. The product comes in a
ultra-compact SIP plastic package with a small footprint occupying only 2.0 cm2
(0.3 square in.) of board space. An excellent efficiency allows –40° to +85°C
operation temperatures.
Further features include remote On/Off control and continuous short circuit protec-
tion. The very compact dimensions of these converters make them an ideal solution
for many space critical applications in battery-powered equipment and instrumen-
tation.
Order code Input voltage Output voltage Output current max. Efficiency typ.
TMR 3-1210WI 3.3 VDC 700 mA 74 %
TMR 3-1211WI 5 VDC 600 mA 78 %
TMR 3-1212WI 12 VDC 250 mA 80 %
TMR 3-1213WI 4.5 – 18 VDC 15 VDC 200 mA 80 %
TMR 3-1221WI (12 VDC nominal) ±5 VDC ±300 mA 80 %
TMR 3-1222WI ±12 VDC ±125 mA 80 %
TMR 3-1223WI ±15 VDC ±100 mA 80 %
TMR 3-2410WI 3.3 VDC 700 mA 75 %
TMR 3-2411WI 5 VDC 600 mA 80 %
TMR 3-2412WI 12 VDC 250 mA 82 %
TMR 3-2413WI 9 – 36 VDC 15 VDC 200 mA 82 %
TMR 3-2421WI (24 VDC nominal) ±5 VDC ±300 mA 79 %
TMR 3-2422WI ±12 VDC ±125 mA 81 %
TMR 3-2423WI ±15 VDC ±100 mA 81 %
TMR 3-4810WI 3.3 VDC 700 mA 74 %
TMR 3-4811WI 5 VDC 600 mA 80 %
TMR 3-4812WI 12 VDC 250 mA 81 %
TMR 3-4813WI 18 – 75 VDC 15 VDC 200 mA 81 %
TMR 3-4821WI (48 VDC nominal) ±5 VDC ±300 mA 79 %
TMR 3-4822WI ±12 VDC ±125 mA 81 %
TMR 3-4823WI ±15 VDC ±100 mA 81 %
Models
pending
http://www.tracopower.com Page 2 of 3
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
DC/DC Converters
TMR 3WI Series 3 Watt
Input Specifications
Input current at full load 12 Vin models: 340 mA max.
24 Vin models: 170 mA max.
48 Vin models: 85 mA max.
Input current at no load 12 Vin models: 40 mA max.
24 Vin models: 25 mA typ.
48 Vin models: 15 mA typ.
Surge voltage (100 msec. max.) 12 Vin models: 25 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Input filter internal capacitor
ESD (electrostatic discharge) EN 61000-4-2, air ±8 kV, contact ±6 kV,
perf. criteria A
Radiated immunity EN 61000-4-3, 10 V/m, perf. criteria A
Fast transient / Surge EN 61000-4-4, ± 2 kV, perf. criteria A
EN 61000-4-5, ± 1 kV perf. criteria A
With external input capacitor e.g. Nippon
chemi-con KY 100 µF, 100 V, ESR 110 mOhm
Conducted immunity EN 61000-4-6, 10 Vrms, perf. criteria A
Output Specifications
Voltage set accuracy ±1 % max
Regulation – Input variation Vin min. to Vin max. 0.2 % max.
– Load variation 0 – 100% single output models: 1.0 % max.
dual output models: 1.0 % max. balanced load
– Load cross regulation 25/100% 5.0 % max. (dual output models)
Minimum load not required
Temperature coefficient 0.02 %/K
Ripple and noise (20 MHz Bandwidth) 30 mVpk-pk max.
Start up time – Power On 30 ms typ.
(constant resistive load) – Remote On 30 ms typ.
Transient response setting time (25% load step change) 250 µs typ.
Short circuit protection continuous, automatic recovery
Capacitive load 3.3 VDC models: 1‘760 µF max.
5 VDC models: 1’000 µF max.
12 VDC models: 170 µF max.
15 VDC models: 110 µF max.
±5 VDC models: ±470 µF max.
±12 VDC models: ±100 µF max.
±15 VDC models: ±47 µF max.
General Specifications
Temperature ranges – Operating –40°C to +85°C
– Case temperature +100°C max.
– Storage –55°C to +125°C
Load derating 3.3 %/K above 70°C
Humidity (non condensing) 95 % rel. H max.
Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >1.7 Mio h
Page 3 of 3
Specifications can be changed without notice! Make sure you are using the latest documentation, downloadable at www.tracopower.com
www.tracopower.com
DC/DC Converters
TMR 3WI Series 3 Watt
Outline Dimensions
Pin Single Dual
1–Vin (GND) –Vin (GND)
2+Vin (Vcc) +Vin (Vcc)
3Remote On/Off Remote On/Off
5No con. No con.
6+Vout +Vout
7–Vout Common
8No con. –Vout
Pin-Out
Rev. October 04. 2013
General Specifications
Isolation voltage (60 sec) – Input/Output 1’500 VDC
Isolation capacity – Input/Output 200 pF max.
Isolation resistance – Input/Output (500 VDC) >1 GOhm
Switching frequency 100 kHz min. (PFM)
Remote On/Off – On: open or high impedance
– Off: 2...4 mA to applied via 1 kOhm resistor
– Off stand by input current 2.5 mA max.
Vibration and thermal shock MIL-STD-810E
Safety standards UL /cUL 60950-1,
IEC 60950-1:2005 (2nd Edition); +A1:2009
Safety approvals – CB test certificate (IEC 60950-1 2nd edition) www.tracopower.com/products/tmr3wi-cb.pdf
– UL/cUL pending
Environmental compliance – Reach www.tracopower.com/products/tmr3wi-reach.pdf
– RoHS RoHS Directive 2011/65/EU
Altitude – operation < 40’000ft (12’000m)
– non operation < 50’000ft (15’000m)
– test report www.tracopower.com/products/tmr3wi-altitude.pdf
Physical Specifications
Casing material non-conductive plastic
Potting material silicon, UL 94V-0 rated
Weight 4.8 g (0.17oz)
Bottom view
3.2
(0.13)
0.5
(0.02)
0.25
(0.01)
2.54
2.0 2.54
21.8
5.08 2.54
0.5
(0.02)
11.1
(0.44)
(0.1) (0.1) (0.1)
(0.08 (0.2)
4.0
2.54
(0.1)
2.54
(0.1)
(0.86)
(0.16)
9.2
(0.36)
1235678
Dimensions in [mm], () = Inch
Pin dimension tolerances 0.1 (0.004)
Pin pitch tolerances: ±0.25 (±0.01)
Tolerances: ±0.5 (±0.02)
Application note: www.tracopower.com/products/tmr3wi-application.pdf
